If you do go down the fasttech route, I would advise you get the batterys and charger from a uk suppler. The nicore intellicharger or xstar chargers seem to be the best.
They are available from torchy charger batterys
yeah i wouldn't order batteries from em as i've been told you can get anything from em low price crap so i'll be sure to get my batteries and nitecore charger here
Yes mate both are crackers , nem is more refined , whereas the m16 is a workhorse , very well made but much heavier , £ 26 for the pair give or take , cant say better than that , no brainer really .